Multimeter (220-0179) Addendum Faxback Doc. # 6271 Auto-Ranging LCD Digital Multimeter When replacing the batteries, the meter's display might lock up or not work properly. To prevent this, set the function switch to OFF before installing or replacing the batteries. If the meter locks up after you set the function switch to OFF and install or replace the batteries, then remove the batteries again. Wait 30 minutes, then reinstall the batteries and try to operate the multimeter again. (RLR/smc-05/16/94)